JOHN SAID, IS PHONG NHA CAVE IN SOUTHERN VIETNAM, NHI

40. John said, Is Phong Nha Cave in southern Vietnam, Nhi?“ ”A. John said Phong Nha Cave was in southern Vietnam, Nhi.B. John asked Nhi was Phong Nha Cave in southern Vietnam.C. John asked Nhi if was Phong Nha Cave in southern Vietnam.D. John asked Nhi if Phong Nha Cave was in southern Vietnam.

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Choose the word whose bold part is pronounced differently from that of the other words.